HRESULTto .NET Exception Transformations
When a COM member (or PInvoke signature marked with
PreserveSig=false) returns a failure
HRESULT, a .NET exception is thrown. The type of the exception depends on the
HRESULT value, according to the tables in this appendix. The exceptions listed are the only ones that can be directly thrown by the CLR in response to a COM object returning a failure
HRESULT, and are a subset of the exceptions defined in the
mscorlib assembly. The only reason that the list doesn’t include all exceptions defined in
mscorlib is that a handful of exceptions share the same
HRESULT values, so one exception type must be chosen when the shared value is returned from COM.
Table C.1 lists exception types alphabetically ...